Cathode ray tube
AssigneeLG Electronics Inc.
InventorCha Geol
Life of this patent
Estimating the term…
Abstract
A cathode ray tube in which a VM effect is maximized in a slim-type cathode ray tube having a short electric field in an anteroposterior direction. The cathode ray tube includes a panel having a fluorescent surface provided to raise colors, a shadow mask provided behind the fluorescent surface, a funnel connected to the rear portion of the panel to provide with an inner portion as an airtight space, an electron gun formed at the rear portion of the funnel for emitting an electron beam, a deflection yoke equipped outside of a neck portion of the funnel to deflect the electron beam, and a VM coil portion of which at least a portion inserted in an interval between the deflection yoke and the funnel to apply an electric field to the electron beam.
Claims44
A cathode ray tube, comprising:
- a panel having a fluorescent surface provided to an inside to raise colors;
- a shadow mask provided behind the fluorescent surface;
- a funnel connected to a rear portion of the panel to provide an inner portion as an airtight space;
- an electron gun formed at a rear portion of the funnel for emitting an electron beam;
- a deflection yoke equipped outside of a neck portion of the funnel to deflect the electron beam;
- and
- a VM coil portion of which at least a part is inserted in an interval between the deflection yoke and the funnel to apply an electric field to the electron beam.
A cathode ray tube, comprising:
- a panel having a fluorescent surface provided to an inside to raise colors;
- a shadow mask provided behind the fluorescent surface;
- a funnel connected with a rear portion of the panel to provide an inner portion as an airtight space;
- an electron gun sealed in the funnel for emitting an electron beam;
- a deflection yoke equipped outside of a neck portion of the funnel to deflect the electron beam;
- a magnet placed behind the deflection yoke;
- and
- a VM coil portion placed outside of a G4 electrode of the electron gun and separated from the magnet.
A cathode ray tube, comprising:
- a panel having a fluorescent surface provided to an inside to raise colors;
- a funnel connected with a rear portion of the panel to provide an inner portion as an airtight space;
- an electron gun placed at a rear portion of the funnel for emitting an electron beam;
- a deflection yoke placed outside of the funnel to deflect the electron beam;
- a magnet placed behind the deflection yoke;
- and
- a VM coil portion of which at least a portion is inserted in an interval between the deflection yoke and the electron gun.
A cathode ray tube, comprising:
- a panel to be placed at a front side;
- a funnel connected with a rear of the panel to provide an inner portion as an airtight space;
- an electron gun of which at least a part is inserted in the funnel for emitting an electron beam;
- a deflection yoke placed outside of the funnel to deflect the electron beam;
- a magnet placed behind the deflection yoke;
- and
- a VM coil of which at least a portion overlaps with the deflection yoke in an anteroposterior direction of the cathode ray tube.
A cathode ray tube, comprising:
- a funnel connected to a panel such that an inner space is defined by the funnel and a panel;
- an electron gun placed within a rear portion of the funnel, the electron gun configured to emit an electron beam towards the panel;
- a deflection yoke placed between the panel and the electron gun and around a neck portion of the funnel, the deflection yoke configured to deflect the electron beam emitted from the electron gun;
- and
- a velocity modulation (VM) coil portion placed in an interval between an inner portion of the deflection yoke and an outer portion of the neck portion of the funnel, the VM coil portion configured to modulate the electron beam emitted from the electron gun,
- wherein at least a portion of the VM coil portion overlaps at least a portion of the deflection yoke.
A velocity modulation (VM) coil portion for use in a cathode ray tube to modulate an electron beam emitted from an electron gun of the cathode ray tube, the VM coil portion designed to be placed in an interval between an inner portion of a deflection yoke and an outer portion of a neck portion of a funnel of the cathode ray tube, the VM coil portion comprising:
- a first conductive line wound a plurality of times;
- a second conductive line also wound a plurality of times;
- and
- a connecting terminal configured to deliver a differential signal to the first and second conductive lines.
Dependencies are inferred from the claim text.